Chester mcneil



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0. MQNEIL.

TRIMMING KNIFE FOR SEWING MACHINES.

No. 547,673. I Patented 0011.8,1895.

UNITED Snares 'A-TENT CHESTER MCNEIL, OF CHICAGO, ILLINOIS, ASSIGNOR TOTHE UNION SPECIAL SEWING MACHINE COMPANY, OF SAME PLACE.

TR-lMMlNG-KNIFE FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 547,673, dated October8, 1895.

Application filed July 11, 1893.

To all whom it may concern:

Be it known that I, CHESTER McNEIL, a citizen of the United States,residing at Chicago, in the county of Cook, State of Illinois, haveinvented certain new and useful Improvements in Trimming-Knives forSewing-Machines, of which the following is a description, referencebeing had to the accompany ing drawings, and to the letters of referencemarked thereon.

My invention relates to an improvement in trimming-knives forsewing-machines and the like. It has been heretofore proposed to provideguides separate from and in rear of the trimmers on sewing-machines todivert the trimmed-off portion of the material; but these guides havebeen of peculiar and more or less complicated construction, and theobject of the present invention is to provide in one construction atrimmer-knife having a guide or wing for deflecting the trimmed-0Estrip; and it consists in the matters shown, described, and referred toin the appended claims.

In the accompanying drawings, which illustrate my invention, Figure 1 isa side elevation of my improved trimmer-knife. Fig. 2 is a top plan viewof the same, and Fig. 3 is a top plan view of a sewing-machinethroatplate for use with my invention when applied to sewing-machines.

I have shown in the drawings my invention as used in connection with asewing-machine, in which either asingle piece of fabric is trimmed andsewed, or the edges of two superposed pieces of fabric are trimmed andsewed, the trimmed-off strip being deflected to one side. It will beunderstood, however, that my trimmer may be arranged to act after thesewing has been accomplished and with regular or irregularstitch-forming mechanismand that overlapped pieces of fabric may betrimmed and sewed thereon.

In the drawings, A represents the trimmerknife, having the opening a,whereby it is attached to a suitable support. It has preferablya beveledcutting-edge b. Commencing at the point 0, the rear portion is bent outof the vertical plane of the body of the knife so as to form a wing B,which will act to divert the trimmed-off strip and guide it to one side.

. the machine.

Serial No. 480,164. (No model.)

On the rear edge the knife has serrations d, which in the stroke of theknife will engage the loose fibers of the fabric and thus keep the slotin the throat-plate clear.

C represents the throat-plate, having the usual slots for the passage ofthe feed-dog and needles and the slot D corresponding to the shape ofthe trimmer.

It will be understood that said trimmer- 6o knife has imparted to it areciprocatory motion in the usual way; but this is not herein shown.

While I have herein shown the wing or guideB as made integral with theknife-blade, it will be understood that it may be formed separately andthen attached to it, the gist of my invention consisting in providingthe knife itself with a wing for deflecting the strip instead of havinga guide of peculiar construction and independently supported onFurthermore, it will be understood that the cutting-edge of the knifemay be serrated in the well-known manner, if desired, and that thetrimming device may be operated in any of the ways well known in theart, and that a trimming device such as herein described may be appliedin other connections than with a sewing-machine. For example, it may beused with cloth, paper, or leather cutting machines.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In combination with asupport for the ar= ticle to be out, a trimmerhaving a cutting edge and having its opposite edge bent to form a wingor guide to deflect the trimmed off strip and adapted to co-operate withan edge of said support; substantially as de- 0 scribed.

2. In a sewing machine, the combination with the trimmer having acutting edge and having its opposite edge bent to form a wing or guideto deflect the trimmed off strip, of a 9 5 cloth plate or support uponwhich the fabric rests and having an opening for the passage of thetrimmer; substantially as described.

3. In a sewing machine, the combination with a trimmer having a cuttingedge and a zoo laterally extending wing or guide in rear thereof, of athroat plate having a slot with a lateral angular extension for thereception of said trimmer; substantially as described.

4. As a new article of manufacture, a trimming knife formed with a frontcutting edge, and having its opposite rear edge bent laterally at anangle to form a wing or guide; substantially as described.

5.'In a sewing machine the combination with a trimmer having a cuttingedge and having its rear portion bent laterally at an angle to the bodyof the knife, the extension of the body of the knife at the bend havinga series of serrations, of a. throat plate having a slot formed for thereception of the trimmer; substantially as described.

6. In combination with a support for the article to be cut, a trimmingknife having a cutting edge, and having its opposite edge bent laterallyat an angle to form a wing or guide to deflect the trimmed off strip,and a co-operating element cutting in connection with said cutting edge;substantially as described.

In testimony whereof I alfix my signature in presence of two witnesses.

CHESTER MGNEIL. Witnesses:

MINNIE MONEIL, WM. II. REED.

